feat(gui): reopened tabs on file reload (PR #793 #792)

* Add getRealFullName() to ClassNode and JavaClass and searchJavaClassByRealName() to JadxWrapper

Those methods is like getFullName() and searchJavaClassByClassName(), but for class names without aliases.
It is necessary for renaming classes/methods/fields.

* MainWindow: Try to restore open tabs on deobfuscation toggle

Restore open tabs if possible when user toggles deobfuscation mode.
Try to scroll to the position before toggling deobfuscation mode (may be not exact cause of the comments).

jadx-core/src/main/java/jadx/api/JavaClass.java

@@ -174,6 +174,10 @@ public String getFullName() {
 		return cls.getFullName();
 	}
 
+	public String getRealFullName() {
+		return cls.getRealFullName();
+	}
+
 	public String getPackage() {
 		return cls.getPackage();
 	}

jadx-core/src/main/java/jadx/core/dex/nodes/ClassNode.java

@@ -517,6 +517,10 @@ public String getFullName() {
 		return clsInfo.getAliasFullName();
 	}
 
+	public String getRealFullName() {
+		return clsInfo.getType().getObject();
+	}
+
 	public String getPackage() {
 		return clsInfo.getAliasPkg();
 	}

jadx-gui/src/main/java/jadx/gui/JadxWrapper.java

@@ -147,4 +147,13 @@ public JadxArgs getArgs() {
 		return decompiler.getClasses().stream().filter(cls -> cls.getFullName().equals(fullName))
 				.findFirst().orElse(null);
 	}
+
+	/**
+	 * @param realName Real name of an outer class. Inner classes are not supported.
+	 * @return
+	 */
+	public @Nullable JavaClass searchJavaClassByRealName(String realName) {
+		return decompiler.getClasses().stream().filter(cls -> cls.getRealFullName().equals(realName))
+				.findFirst().orElse(null);
+	}
 }

jadx-gui/src/main/java/jadx/gui/ui/MainWindow.java

@@ -19,8 +19,10 @@
 import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Locale;
+import java.util.Map;
 import java.util.Timer;
 import java.util.TimerTask;
 
@@ -38,11 +40,13 @@
 import javax.swing.tree.TreeSelectionModel;
 
 import org.fife.ui.rsyntaxtextarea.Theme;
+import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import jadx.api.JadxArgs;
+import jadx.api.JavaClass;
 import jadx.api.JavaNode;
 import jadx.api.ResourceFile;
 import jadx.gui.JadxWrapper;
@@ -373,9 +377,46 @@ public synchronized void cancelBackgroundJobs() {
 
 	public void reOpenFile() {
 		File openedFile = wrapper.getOpenFile();
+		Map<String, Integer> openTabs = storeOpenTabs();
 		if (openedFile != null) {
 			open(openedFile.toPath());
 		}
+		restoreOpenTabs(openTabs);
+	}
+
+	@NotNull
+	private Map<String, Integer> storeOpenTabs() {
+		Map<String, Integer> openTabs = new LinkedHashMap<>();
+		for (Map.Entry<JNode, ContentPanel> entry : tabbedPane.getOpenTabs().entrySet()) {
+			JavaNode javaNode = entry.getKey().getJavaNode();
+			String classRealName = "";
+			if (javaNode instanceof JavaClass) {
+				JavaClass javaClass = (JavaClass) javaNode;
+				classRealName = javaClass.getRealFullName();
+			}
+			@Nullable
+			JumpPosition position = entry.getValue().getTabbedPane().getCurrentPosition();
+			int line = 0;
+			if (position != null) {
+				line = position.getLine();
+			}
+			openTabs.put(classRealName, line);
+		}
+		return openTabs;
+	}
+
+	private void restoreOpenTabs(Map<String, Integer> openTabs) {
+		for (Map.Entry<String, Integer> entry : openTabs.entrySet()) {
+			String classRealName = entry.getKey();
+			int position = entry.getValue();
+			@Nullable
+			JavaClass newClass = wrapper.searchJavaClassByRealName(classRealName);
+			if (newClass == null) {
+				continue;
+			}
+			JNode newNode = cacheObject.getNodeCache().makeFrom(newClass);
+			tabbedPane.codeJump(new JumpPosition(newNode, position));
+		}
 	}
 
 	private void saveAll(boolean export) {

jadx-gui/src/main/java/jadx/gui/ui/TabbedPane.java

@@ -105,7 +105,7 @@ public void codeJump(JumpPosition pos) {
 	}
 
 	@Nullable
-	private JumpPosition getCurrentPosition() {
+	JumpPosition getCurrentPosition() {
 		ContentPanel selectedCodePanel = getSelectedCodePanel();
 		if (selectedCodePanel instanceof AbstractCodeContentPanel) {
 			return ((AbstractCodeContentPanel) selectedCodePanel).getCodeArea().getCurrentPosition();